null Skip to main content
Toggle Menu Shop
Advanced Search

Transmission Cooler, fits Dodge Ram 5.9L/6.7L Cummins 2003-2009 | MMAMMTC-RAM-03SL

Mishimoto

Transmission Cooler, fits Dodge Ram 5.9L/6.7L Cummins 2003-2009 | MMAMMTC-RAM-03SL

Part #MMAMMTC-RAM-03SL
$916.09

Fulfillment

FREE in-store pickup
* Shipping not yet available
Adding to cart… The item has been added
There's no greater enemy for a transmission than heat. Whether your 2003-2009 Dodge Ram 5.9L / 6.7L Cummins is a dedicated tow vehicle, hardworking fleet truck, or a daily driver, you need to ensure that your transmission runs cool. Luckily, Mishimoto has developed a direct-fit transmission cooler to do just that. Our 2003-2009 Dodge Ram 5.9L / 6.7L Cummins transmission cooler utilizes a stacked plate core for durable and powerful cooling. With a massive 212-percent greater core volume, 244-percent increase in fluid capacity, this trans cooler is a huge improvement over stock 2003-2009 Dodge Ram 5.9L / 6.7L Cummins transmission cooler. The Mishimoto transmission cooler is not only larger than the stock cooler, but more reliable too. When the stock cooler's thermostat fails, it fails closed, bypassing the cooler and returning hot fluid to the transmission. Mishimoto has solved this common issue by making the thermostat in our 2003-2009 Dodge Ram Cummins transmission cooler fully serviceable and easily bypassed for constant cooling. A port located at the top of the cooler provides easy access to the thermostat for servicing in just a few minutes. Replacement thermostats can be purchased individually if needed no more replacing the entire cooler if the thermostat fails. Owners in cold climates can still enjoy the fast warm-up times that the thermostat provides, while owners in hot climates can choose to bypass the thermostat by replacing it with the supplied stainless-steel bypass plug. To make this cooler even easier to install and service, Mishimoto'saves you the hassle of removing seized fittings. The provided CNC-machined, stainless steel hose barb fittings let you cut to the chase, literally. These fittings and the supplied transmission cooler hose allow you to remove the quick-disconnect fittings and connect the stock soft-line to the Mishimoto cooler. Like all Mishimoto products, this transmission cooler is backed up by our Lifetime Warranty
  • Fits all 2003-2009 Dodge Ram 5.9L and 6.7L Cummins
  • 212-percent Increase in core volume
  • 244-percent Increase in fluid capacity
BrandMishimoto
Manufacturer Part NumberMMTC-RAM-03SL

In-store Pickup

  • In-stock items: Ready in as little as 2 hours.
  • Ship-to-store items: Ready in-store in 1 to 4 days.
We’ll keep you informed every step of the way and email you as soon as your order is ready for in-store pickup. Want more info? Visit Click and Collect.

Shipping

Coming soon! Sign up and we’ll let you know when shipping is available.

Returns

Most unopened online purchases can be returned or exchanged at any of our store locations within a year from the date of sale. Some exceptions apply. See our return policy for full details.

GENERAL INQUIRIES

Need help finding an item?

Ask a store representative to place a special order.